As a fan of lisp and smalltalk myself, and as "one of the few programmers who has worked in CL commercially in this century", I take my emacs hacking sessions as the most similar experience to it I can have in a daily basis, but in the link I posted, Kent Pitman says:
"I don't even find Emacs itself to be equivalently self-documenting and
easy to get around in, much less the many systems that Emacs touches."
Indeed Smalltalks (Squeak, Pharo, Amber) have so many "Aha!" moments waiting inside I just open them and start fiddling with the Class Browser (until I break the whole thing).
As a fan of lisp and smalltalk myself, and as "one of the few programmers who has worked in CL commercially in this century", I take my emacs hacking sessions as the most similar experience to it I can have in a daily basis, but in the link I posted, Kent Pitman says:
"I don't even find Emacs itself to be equivalently self-documenting and easy to get around in, much less the many systems that Emacs touches."